Teach it about golang

would-reformat.sh

@@ -42,6 +42,22 @@ elif [[ $file_type == "python" ]]; then
     else
         retval="$isort_retval"
     fi
+elif [[ $file_type == "golang" ]] ; then
+    success_retval=0
+    would_reformat_retval=1
+    syntax_error_retval=2
+
+    out=$(gofmt -l $file)
+    exitval="$?"
+
+    if [[ x"$exitval" = x"$syntax_error_retval" ]] ; then
+        retval="$exitval"
+    elif [[ x"$out" = x"$file" ]] ; then
+        retval="$would_reformat_retval"
+    else
+        # success
+        retval="$exitval"
+    fi
 else
     echo -n "ignoring"
     exit 0